Self-Lubricating Bronze Bushings
Graphite-plugged bronze bushings cast and machined to your drawing for mining and heavy equipment, for lubrication-starved pivot and shaft positions.
Self-lubricating bronze bushings combine a cast bronze body with graphite plugs set into the sliding surface. In positions where grease lines are difficult to reach, where relubrication intervals are long, or where a shaft runs with marginal lubrication, the graphite transfers a film onto the mating surface and helps the bushing keep working between service stops. We cast and machine these bushings to your drawing, so bore, length, flange and groove details match the housing you already have.
Design and materials
Bronze grade selection follows the load, speed and environment of the joint. C93200 (SAE 660) tin bronze is a common starting point for moderate-load bushings, while C95400 aluminium bronze is often chosen where impact and abrasive dust are present. Graphite plug pattern, plug size and coverage are set with the bore diameter and the direction of sliding in mind. Bushings can be supplied as plain sleeves, flanged bushings or thrust washers, with oil grooves, chamfers and locating features machined as required.
- Cast bronze body with graphite plugs in the wear surface
- Plain, flanged and thrust configurations
- Oil grooves, chamfers and bore tolerances machined to drawing
- Grades matched to load, speed and dust conditions
- Suitable for greased, oiled or dry-running positions
Typical applications
These bushings are used in crusher and screen pivot points, conveyor idler and pulley hubs, bucket and linkage pins on loaders and excavators, and pump or valve trunnion positions. They are also a practical replacement where an OEM bronze bushing has worn and the original lubrication route is unreliable. More options are listed under self-lubricating bushings and bronze bushings.
Manufacturing and inspection
We pour the bronze in our own foundry using centrifugal, sand or metal mold casting depending on size and quantity, then machine the part in-house. Each heat is checked with spectrometer composition analysis, and finished bushings are hardness tested before packing. If you only have a worn part, we can reverse-engineer it from a sample and match the original alloy.
Send your drawing or a worn sample for a free evaluation.
Materials
Procurement facts
| MOQ | Samples from 1 pc; batch orders quoted per drawing |
|---|---|
| Tolerance | Machined to drawing tolerances |
| Lead time | Confirmed at quotation, per drawing and quantity |
Specifications
| Materials | C93200 (SAE 660) tin bronze, C95400 aluminium bronze, other grades to order |
|---|---|
| Casting process | Centrifugal casting, sand casting or metal mold casting |
| Size range | Castings from 20 mm to 6000 mm diameter, 0.1-15000 kg; specific parts made to drawing |
| Machining | In-house CNC machining to drawing |
| Inspection | Spectrometer composition check, hardness testing |
| Customization | OEM, per drawing or sample |
Related Products
Graphite-Plugged Bronze Bushings for Mining Equipment
Self-lubricating graphite-plugged bronze bushings cast and machined in-house for mining and heavy equipment. Send your drawing or worn sample for a free evaluation.
View DetailsSelf-Lubricating Flanged Bronze Bushing
Graphite-plugged flanged bronze bushing for guide, support and low-friction sliding duties where re-greasing is difficult. Cast and machined to your drawing or sample.
View DetailsFlanged Bronze Bushing with Solid Lubricant Plugs
Flanged bronze bushing with graphite plugs for high-load, low-speed pivots. Cast and machined in-house, made to your drawing or worn sample.
View DetailsRequest a Quote
Tip: tell us the duty — load, speed and lubrication conditions.